Both have plastic undersides, but the tops are metal, so I believe it is the Chogokin Engine Vulca & Engine Gumper Set from the official release. I believe it is in relatively clean condition, but as it is an item from that era, there are scuffs and paint peeling. Please check the condition in the photos and only purchase if you understand this. * ↓ Quoted from the official website: This is a set of a die-cast mini-car of Engine Vulca (approx. 70mm in length) and a die-cast mini-car of Gumper with built-in suspension (approx. 65mm in length).